Rain and Thunderstorms Threaten 2026 Miami Grand Prix

Thunderstorms are poised to dominate the 2026 Miami Grand Prix. AccuWeather, a forecasting service relied upon by many F1 teams, shows an 88% chance of rain and a 53% probability of thunderstorms on Sunday. Under U.S. public‑safety law, any approaching lightning forces a red‑flag, halting the race and potentially sending drivers back to the pit lane.

Why it matters:

Safety is non‑negotiable: lightning poses a direct risk to drivers, crew, medical helicopters and spectators. A race stoppage also reshapes strategy, as teams can work on cars in the garage—a privilege only granted at the three U.S. venues (Miami, Austin, Las Vegas).

The details:

• Forecast: 88% chance of rain, 53% chance of thunderstorms for Sunday; Friday and Saturday expected dry.
• U.S. safety law: Any thunderstorm within range triggers a mandatory red flag; medical helicopters cannot operate, spectators must evacuate.
• F1 rule (Article 57): Cars must return to the pit lane, be pushed into the garages, and can only receive work listed in Articles 57.4 b (i‑x). Work must not delay the restart.
• Garage advantage: At Miami, Austin and Las Vegas teams may continue work inside the garage during a red flag, unlike other circuits where work is limited to the pit lane.
• Restart protocol: Once the race director deems conditions safe, a restart order is published at least 18 minutes before the restart, with a minimum ten‑minute notice to teams.

What's next:

Friday’s practice and Sprint Qualifying are slated to run under clear skies, giving teams a chance to gather data before the weather threat. If thunderstorms arrive Sunday, officials will follow the Article 57 protocol, and the race may be shortened or even called off if conditions do not improve. Teams will likely prioritize a quick garage turnaround to minimise lost laps.